<i>Polarized Electrons</i>

Kessler, J.; Foiles, C. L.

doi:10.1063/1.3037636

Cited by 23 publications

(37 citation statements)

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“…Two electron spin polarization components A(O) (parallel to the light helicity) and P±(O) (perpendicular to the reaction plane, given by the momenta of light and electrons at the target) as defined in the left part of Fig. 1 are simultaneously determined by Mott scattering [22]. As in practice the synchrotron radiation is slightly elliptically polarized (degree of circular polarization _+93%), one has to take into account the azimuthal orientation ~ of the light ellipse.…”

Section: Experimental Set Upmentioning

confidence: 99%

“…Furthermore, the photoelectron emission was studied in the mirror plane of adsorbate and substrate. For this condition electron scattering only yields a spin-polarization component normal to the scattering plane, comparable to a single scattering process [14][15][16]22]. Additionally we used Xe as adsorbate system because for a Xe single crystal the experimental LEED results can be well fitted within a single scattering (kinematic) approximation [23].…”

Section: Introductionmentioning

confidence: 99%

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Spin-resolved off-normal photoemission from xenon adsorbates in comparison with free-atom photoionization

Keßler

Müller

Schmiedeskamp

et al. 1990

Z Phys D - Atoms, Molecules and Clusters

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Circularly polarized synchrotron radiation of BESSY has been used to study the angular dependence of the spin polarization of photoelectrons emitted from X e (~x 1~) R30 ° Pd(lli). The spin-polarization component along the light helicity varies from + 1 for normal emission to -0 . 5 for emission angles larger than 45 ° . The data can be fitted by use of the theory for photoionization of free xenon atoms and yield the dynamical fit parameters A, ~,/~, ~ for the adsorbate. Good agreement is obtained with the gas phase data.

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Section: Experimental Set Upmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spin-resolved off-normal photoemission from xenon adsorbates in comparison with free-atom photoionization

Keßler

Müller

Schmiedeskamp

et al. 1990

Z Phys D - Atoms, Molecules and Clusters

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“…where again S is the Sherman function, I is the sum of the current collected by the two opposite detectors and I 0 is the incident beam current (Kessler 1985). The FOM for the traditional Mott polarimeter is typically 10 -4 ; that of the compact low-energy Mott device was initially of the order of 2 x 10 -5 (Tang et al 1988).…”

Section: Measuring the Spin Polarizationmentioning

confidence: 99%

Spin‐polarized Photoelectron Spectroscopy as a Probe of Magnetic Systems

Johnson

Güntherodt

2007

Handbook of Magnetism and Advanced Magnetic Materials

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Spin‐polarized photoelectron spectroscopy has developed into a versatile tool for the study of surface and thin‐film magnetism. In this chapter, we examine the methodology of the technique and its recent application to a number of different problems. We first examine the photoemission process itself followed by a detailed review of spin‐polarization measurement techniques and the related experimental requirements. We review studies of spin‐polarized surface states, interface states, and quantum‐well states followed by studies of the technologically important oxide systems including half‐metallic transition‐metal oxides, ferromagnet/oxide interfaces and the antiferromagnetic cuprates that exhibit high T c Superconductivity. We also discuss the application of high‐resolution photoemission with spin resolving capabilities to the study of spin‐dependent self‐energizing effects.

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“…Spin polarization of photoelectrons has been proved experimentally to be a common rule rather than an exception for most atomic and molecular systems [1,2]. One has to distinguish between two different kinds of "prOduction" of spin polarization of photoelectrons from unpolarized targets: The first kind theoretically predicted by Fano in 1969 [3], and shortly thereafter experimentally found at Cs [4], is a spin-polarization transfer from the ionizing light to the photoelectrons produced (Fano effect).…”

Section: Introductionmentioning

confidence: 99%

Analysis of autoionization resonances in the Hg 6s 2-photoionization by measurements of photoelectron polarization

Schäfers¹,

Schönhense²,

Heinzmann³

1982

Z Physik A

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Measurements of the spin polarization of photoelectrons in the autoionization region of the Hg 6sZ-subshell using circularly polarized synchrotron radiation and using unpolarized light from rare gas discharge lamps are reported. The results obtained show a pronounced structure across the resonances. Together with data of the cross section and its angular distribution these data from a complete parameter set for the determination of the transition matrix elements and the phase difference of the continuum wavefunctions. Evidences for strong configuration interaction and channel mixing between the open and closed channels were found. The matrix elements and their ratio vary strongly across the resonances and the relative phase shows some changes of sign. A change of the relative phase by rc across an autoionization resonance, predicted by Fano, has been verified experimentally for the triplet resonance.

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Polarized Electrons

Cited by 23 publications

References 0 publications

Spin-resolved off-normal photoemission from xenon adsorbates in comparison with free-atom photoionization

Spin-resolved off-normal photoemission from xenon adsorbates in comparison with free-atom photoionization

Spin‐polarized Photoelectron Spectroscopy as a Probe of Magnetic Systems

Analysis of autoionization resonances in the Hg 6s 2-photoionization by measurements of photoelectron polarization

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